body {
  font-family: Arial, sans-serif;
  background-color: #f9f9f9;
  margin: 0;
  padding: 0;
}
header {
  background-color: #2c3e50;
  color: white;
  padding: 40px 20px;
  text-align: center;
}
nav {
  background-color: #a0c4ff;
  padding: 10px;
  text-align: center;
}
nav a {
  color: white;
  margin: 0 15px;
  text-decoration: none;
  font-weight: bold;
}
nav a:hover {
  text-decoration: underline;
  color: #2c3e50;
}
section {
  max-width: 900px;
  margin: 40px auto;
  background-color: #ffffff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}
h1, h2, h3 {
  color: #2c3e50;
}
ul {
  padding-left: 20px;
}
.image-placeholder {
  width: 100%;
  height: 200px;
  background-color: #d0e8ff;
  color: #2c3e50;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 20px;
  border-radius: 10px;
  font-style: italic;
}
form label {
  display: block;
  margin-top: 10px;
}
form input, form textarea {
  width: 100%;
  padding: 8px;
  margin-top: 5px;
  border-radius: 5px;
  border: 1px solid #ccc;
}
form button {
  margin-top: 15px;
  padding: 10px 20px;
  background-color: #a0c4ff;
  color: #2c3e50;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
form button:hover {
  background-color: #87bfff;
}
footer {
  background-color: #2c3e50;
  color: white;
  text-align: center;
  padding: 20px;
  margin-top: 50px;
}
.whatsapp-button {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #25D366;
  color: white;
  padding: 10px 20px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  box-shadow: 0 4px 6px rgba(0,0,0,0.2);
}
<link rel="stylesheet" href="css/style.css">
header {
  display: flex;
  align-items: center;
  background-color: #004080;
  padding: 10px 20px;
  gap: 15px;
}

header h1 {
  color: white;
  margin: 0;
  font-size: 1.8rem;
}

header p {
  color: white;
  margin: 0;
  font-size: 1rem;
  opacity: 0.85;
}